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59417C SAFC

Trypsin-EDTA Solution 1X

0.05% trypsin, 0.02% EDTA, trypsin gamma irradiated by SER-TAIN Process, in Hanks′ Balanced Salt Solution

Synonym: Trypsin-EDTA solution

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Properties

Related Categories Cell Biology, Dissociation, General Stem Cell Biology, Stem Cell Biology, Stem Cell Isolation More...
Quality Level   500
sterility   sterile; sterile-filtered
form   liquid
  liquid
components   phenol red: 10.62 mg/L
NaHCO3: 350 mg/L
shipped in   dry ice
storage temp.   −20°C

Description

Application

The typical use for this product is in removing adherent cells from a culture surface.

Biochem/physiol Actions

Trypsin cleaves peptides on the C-terminal side of lysine and arginine residues. The rate of hydrolysis of this reaction is slowed if an acidic residue is on either side of the cleavage site and hydrolysis is stopped if a proline residue is on the carboxyl side of the cleavage site. The optimal pH for trypsin activity is 7-9. Trypsin can also act to cleave ester and amide linkages of synthetic derivatives of amino acids. EDTA is added to trypsin solutions as a chelating agent that neutralizes calcium and magnesium ions that obscure the peptide bonds on which trypsin acts. Removing these ions increases the enzymatic activity.

Serine protease inhibitors, including DFP, TLCK, APMSF, AEBSEF, and aprotinin, amongst others, will inhibit Trypsin.

Components

Trypsin consists of a single chain polypeptide of 223 amino acid residues, produced by the removal of the N-terminal hexapeptide from trypsinogen which is cleaved at the Lys - lle peptide bond. The sequence of amino acids is cross-linked by 6 disulfide bridges. This is the native form of trypsin, beta-trypsin. BETA-trypsin can be autolyzed, cleaving at the Lys - Ser residue, to produce alpha-trypsin. Trypsin is a member of the serine protease family.

Caution

This product is stored frozen between -10 and -40°C. Repeated cycles of freezing and thawing should be avoided.

Preparation Note

This product does contain phenol red. Due to shipment on dry ice, there could be significant carbon dioxide buildup in the package. This CO2 may enter the solution and lower the pH slightly, giving an orange rather than pinkish color. The orange solution will still be suitable for use, or the pH can be adjusted with sodium hydroxide. Incubating cells with too high a trypsin concentration for a long period can damage cell membranes and kill the cells. Solubilizing trypsin or diluting it from a concentrated solution should be done with a buffered salt solution contaiing no Ca2+ or Mg2+.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles

Protocols

Neural Stem Cell Culture Protocols

Introduction Methods     Isolation of Neural Stem Cells         Isolation of NSCs from Neural Tissue         Differentiation of Human iPSCs into NSCs         Characterization of Neural Stem Cells    ...
Keywords: AGE, Adhesion, Apoptosis, Cell culture, Central Nervous System, Cryopreservation, Culture media, Diseases, Growth factors, High performance liquid chromatography, Phase transitions, Phosphorylations, Purification

Peer-Reviewed Papers
15

References

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